Compound plastic material.



W. H. UNDERWOOD. GOMPOUND PLASTIO MATERIAL. APPLIoATIoH FILED nov. 12, 190s.

1,012,030. Patented 11911111911.

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Bpecioatlon of Letters Patent.

Patented Dec. 19,1911.

Application led November 12, 1908.V Serial No. 482,225.

To all whom 'it may concern:

Be it known that I, WALTER H. UNDER- Wooo, a citizen of the United States, and resident of the borou h of Manhattan, city, county, and Stute o New York, have invented certain new and useful Improvements in. Compound Plastic Materials, of which the following is a specification, accompanied by drawings.

This invention relates to a new com ound plastic material, and the objects of t e invention are to increase the usefulness of various plastic compositions and make valuable the useful properties of shredded metal, which is also known as metallic wool.

Referring to the accompanying drawingr Figure 1 is a view of a mass of the metal ic wool; Fig. 2 is a longitudinal view of a piece of yarn spun from the metallic wool and im re ated with gum or other plastic material; ig. 3 is a longitudinal view of a yarn wound about a suitable core and impregnated with gum or other plastic material; Fi 4 is a top plan view of a piece of material comprising a plurality of yarns embedded in plastic material; ig. 54 is a transverse sectional view through Fig. 4;

Fig. 6 is a top plan View of a plurality of crossed'yarns embedded in plastic material; Fig. 7 is a plan view of a fabric made from metallic yarns er threads; Fi 8 is a sectional view of a metallic fabric made from yarns or threads impre ated with plastic material; Fig. 9 is a sectional view of a piece of material made from a plurality of layers of metallic fabric impregnated with plastic material.

This invention is in part a division of my co-pendin application, Serial No. l337,675, led Octo r 6, 1906, for 'a tire; and in part a division of my cci-pending application, Serial No. 337,674, filed October 6, 1906, for metallic yarn and fabric. y

I have discovered that ne metallic ber cut` or shredded from metal in the usual manner in which such material'is made, or any metallic ber having rough or serrated edges in contradistinction to smooth wires,

may be spun and yarn ma be made therefrom. One form of meta ic ber suitable for spinning into a yarn is known commercially as metallic wool, and if made from steel this material is known as steel wool. The bers of such metallic wool are ordinarily more or less irregular in cross section, and the edges are serrated or roughened in .the nature of wool or hair, thereby making it oible to spin the' bers into yarn.

eferring to the drawings Fig. 1 represents a mass of cut metallic ber. This metallic wool may be made from any suitable metal as steel, brass, bronze, or other alloy. The material is `preferably rst carded lto facilitate the operation of spinning, and if desired, the material may be annealed before carding for the purpose of putting it 'into such hysical condition as will make it most a apt-able for the subsequent manipulation. If yarn is made from unannealed metallic wool, the yarn ma be -annealed after spinning, or if desire it may be hardened and tempered. If the wool is first annealed, and then spun, the yarn may be then hardened and tempered.

In accordance with this invention, the metallic yarn is impregnated with a suitable plastic, as `for instance gum of any suitable character or rubber, and in Fig. 2, I have illustrated a metallic arn A impregnated with 'rubber B. Cellu oid or any artificial gum may be used instead of rubber.

The yarn may be im regnated with, and incorporated in, rubber by applying the rubber in the form of a solution, or by placing the yarn between the layers of raw rubber already prepared by milling with the proper proportions of ower sulfur, approximately ten per cent., and then placing the layers of yarn and,rubber in a suitable vulcanizing press, and curing the material with the addition of ressure as well understood by those skilled in the art of rubber manufacture.

As shown, in Fig. 2 the rubber enters the interstioes of the yarn. By modifying the vulcanizing process in the ordinary manner, a product consistingl of hard rubber having yarn impregnated t erein may be made. By varying the composition of the milled rubber, the product may vary from a soft exible material to a hard gutta percha.

In Fig. 3, the yarn A is shown wound upon a suitable core C, and the whole impregnated with l,rubber or other ,suitable plastic B. In Fig. 4 the material is shown aving a plurality of yarns A lying side by side imiregnated with and incorporated in, rubber or other suitable plastic, and Fi 5 is a cross section of Fig'. 4. Substantial y the' same rocesses of manufacture are carried outA w en a plurality of arns arel used as when one yarn is'used. n Fig. 6, the

yarns A-are shown crossed and the whole impregnated with and incorporated in, rubber or other plastic B.

If desired, the yarns may be woven int-o a fabric as in Fig. 7, and the fabric impregnated with and incorporated in plastic B as shown in cross section in Fig. 8. Fig. 9 shows a plurality of layers of metallic abric impre ated with and embedded in rubber or ot er plastic. Instead of weavin the yarns into a fabric they may be net or knitted, or manipulated in any other manner to form a fabric. l It will be notedlhat in the various forms of plastic fabric shown in Figs. 4 to 9 inelusive the spun metallic arns-are arranged in regular order and em dded or incorporated in the plastic material. The plastic fabric thus formed may vvary in thickness and pliability, according to the use for which it is Intended. For instance, I may produce' a fabric of soft or annealed yarn embedded in iiexible rubber, or I may use tempered or hardened dyarn incorporated in gutta percha or har rubber, or I may make fabrics of any grade intermediate these extremes. I may also, for some pur oses, use` soft or annealed yarn or fabric in ardened lastic material or hardened yarn or fabric 1n soft or exible plastic material. By the term metallic fabric I intend to designate any fabric mede from metallic yarn or thread whether woven, knitted or otherwise produced; and by the term plastic material I intend to designate any material which is soft or plastic when the metallic yarn or fabric is incorporated therewith, notwithstanding it ma subsequently become hard, as in the case o hard rubber or gutta percha. L

Plastic compositions and fabri embodying my invention are useful for man purposes. When the metallic yarn or fa ric is combined with rubber or other soft material it is suitableV for floor covering, stair treads, conve er belts, packing for joints, shoe soles andy heels, treads for pneumatic or solid tires, etc.

I claim and desire to obtain by Patent the followin 1. As an improvef article of manufacture, a compound plastic material, comprising a Leners p lastic ysubstance having metallic yarn fabric incorporatedl therein.

2. As an improved article of manufacture,

substance having va metallic fabric woven from metallic yarn incorporated therein.

4. As an improved article of manufacture, a compound plastic material, comprisin rubber having a metallic fabric made o metallic yarn incorporated therein.

5. As an improved article of manufacture,

a compound plastic material, complrisin rubber having a metallic fabric made o x spun metallic wool incorporated therein.

6. As an article'of manufacture, a comound plastic material, comprising rubber, aving a metallic fabric woven from metallic yarn incorporated therein.

7. The improved fabric comprising a layer of metallic yarn fabric with outer layers of plastic material.

t 8. As an 'improved article of manufacture, 'a com und plastic material comprising a metal ic yarn impregnated with plastic material. Q

9. A metallic yarn spun from metallic fibers said yarn being impregnated and coated with plastic material.

10. An improved plastic fabric consisting in a plastic materia having a lurality o spun metallic yarns incorpora therein in regular arrangement.

11. An improved plastic fabric consisting in a plastic materia having a plurality of series of spun metallic yarns incorporated therein in regular arran ment the arns in one series bein arrange transverse y of the yarns in anb er series.

In testimony whereof IA have signed this' specification in the resenoe' of two subscrib, ing witnesses, Octo 17th, 1908.

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Witnesses: Y

E. VAN ZANM, E. P. La Gar. 

